Bright display system



w. G. ALEXANDER 3,115,075

BRIGHT DISPLAY SYSTEM Filed Feb. 9. 1960 4 Sheets-Sheet l"III/IIIIIII/IIIIA INVENTOR. WILLIAM G. ALEXANDER.

ATTORNEY.

D 1963 w. G. ALEXANDER 3,115,075.

BRIGHT DISPLAY SYSTEM Filed Feb. 9, 1960 4 Sheets-Sheet 2 L I JTNVENTOR.

/ T WILLIAM G. ALEXANDER.

ATTORNEY.

Dec. 24, 1963 w. G. ALEXANDER BRIGHT DISPLAY SYSTEM 4 Sheets-Shet 5Filed Feb. 9, 1960 ,2ini'ill'llllllll'l'itfl ii-IIIIIIIIII-IIIIII-l mil""ll INVENTOR LLIAM G. ALEXANDER.

A TTOIZNEY.

Dec. 24, 1963 w, ALEXANDER 3,115,075

BRIGHT DISPLAY SYSTEM Filed Feb. 9, 1960 4 Sheets-Sheet 4 INVENTOR.WILLIAM G. ALEXANDER.

ATTORNEY The present invention relates generally to a bright displaysystem. More particularly the invention relates to a system andconstruction utilizing a xerographic memher having as its recordingsurface a photoconductive layer. The photoconductive layer is disposedthereupon for utilization in electrophotography or xerography, in a highspeed exposing, developing and projection system and construction.

Xerographic or electrophotographic devices utilizing xerographic membersare generally known in the art. However, the expeditious utilization ofthese members to serially efi'ect rccordation of information thereupon,subsequently to develop that information and to cause projection orrecordation therefrom is generally unknown. The usual approaches arestill generally handled in a rather slow or laborious manner. Thepresent invention seeks to overcome the slow speed and laborious methodsof the prior art. It embodies Within a single processor construction,serial action upon the xerographic memher to effect in order, a removalof the member from the storage chamber, charging the surface of themember, exposing the member to the desired image to be recordedthereupon as latent electrostatic image, transporting the member fromthe exposing to the developing station, developing the latent image intoa visual image, thereafter transporting the member to a projectionstation for projecting of the visual image from the member surface ontoa screen or recording film. Following its utilization at the projectionstation, the member may be stored for later usage or the member removedand the image erased. The member is thereafter ready for subsequentusage.

The novel xerographic processor construction includes a xerographicmember having disposed on one surface a sensitizing layer such as aphotoconductive layer. The member is name xerographic member to give ita name only. Xerographic member for purposes of this invention isdefined to include sensitizing surfaces and referred to hereafter asxerographic plates, as well as xerographic areas upon an elongated beltmeans, either completely coated with the sensitized layer or only in thediscrete areas.

For purposes of explanation the invention is described utilizing thepreferred embodiment employing the xerographic plate. The belt means andits at least predetermined areas thereon are included as anotherembodiment of the invention. A further embodiment shows the projectionof the light information from the xerographic member to film for subsetent projection. This film is capable of responding to high speeddevelopment. The member or plate may be of a plastic or metallicconstruction that is durable and nonpoisonous with respect to thephotoconductor disposed thereof. A light excluding storage chamber isprovided at one end of the processor construction and utilized tocontain the unexposed plates. A. storage bin for containing exposedplates is positioned at another end of the processor construction. inbetween the storage chamber and the storage bin is a channeling meansconnecting the chamber to the bin. The channeling means provides aconduit or channel to allow selective movement of the plates seriallyone after the other from the chamber to the bin. Serially positionedalong, adjacent and in cooperative relation with the channeling means isa charging station, an exposing station, a denited States Patent 0Patented Dec. 24, 19%3 veloping station, and a projection station, allfor selectively and serially acting upon the plate, in the order named.The plate may be moved along the channeling means by gravity or bypositive action such as chain links or belts, exemplified herein as amagnetic belt. The plate may be made of magnetically attractablematerial or have embodied in its unsensitized surface magneticallyattractable material. The plate and the belt may be selectively engagedof disengaged as desired in the travel of the plate and belt through andalong the channeling means.

At each of the stations enumerated, there may be disposed means that areselectively actuatable for restraining the movement of the plate intoand along the channel. Such means may be a selectively operable solenoidand plunger arrangement. in addition, centering means may also beutilized at predetermined stations to properly center the stopped plateat that station, thereby insuring operation of that station to beconducted upon a properly centered plate.

As can readily be seen, the movement of the plate through the channelingmeans may be under the influence or gravity or under the positive forceof the magnetic belt. Therefore, transfer from one station to the nextmay be at a relatively high speed if so desired, or may be at arelatively slow speed, if so desired. There is considerable choiee ofthe speeds at which the present apparatus may be operated. The presentinvention, therefore, is adaptable to various situations which may bedemanded of recording and projection equipment, and is flexible in itsusage.

The belt means carrying the sensitized layer may be intermittentlyoperated under the influence of a motor and clutch to serially presentthe predetermined areas thereon at the stated stations. The belt meansmay be endless, as exemplified herein, or carried on a spool in thestorage bin. If the belt means is endless, a cleaning station may beadded between the storage bin and the storage chamber.

in addition to advantages and objects aforesaid, it is an object of thepresent invention to provide a simple and high speed display system forproviding bright displays of light information.

It is another object of the present invention to provide a relativelysimple, trouble-free xerographic processor construction utilizing thexerographic member.

It is another object of the present invention to provide a xerographicprocessor construction in which the xerographic member moves rathersimply from storage through its various stations with the rapidity orspeed of operation desired of the equipment, all in a single channelingmeans or chamber, and maintaining relatively accurate alignmentthroughout its movement so as to provide proper alignment at desiredexposer and projection stations.

It is another object of the present invention to provide a xerographicprocessor construction which serially performs at the operations uponand with the xerographic member with minimal moving parts and minimalcomplexity.

it is another object of the invention to provide a xerographic processorconstruction wherein a predetermined tirne delay between exposing of themember and projection of the image therefrom may be varied as desiredWithin wide limits.

it is another object of the present invention to provide a device forrecording light information from a xerographic member on high speed filmfor later projection as a br'aht display.

o'e ts and adi 'antages other han those set forth will become apparentfrom the following description when 3 read in connection with theaccomp-. which:

FIGURE 1 is an elevational side view showing schematically an embodimentof the invention;

FIGURE 2 is a cro s sectional view of a portion of the channeling meansalso showing the restraining means and the centering means as utilizedin cooperation with the plate at predetermined of the stations;

FIGURE 3 is a partial elevational View along line lll-lll of FIGURE 2showing the back side of the channeling means;

FlGURE 4 is a View in perspective of part of the channeling meansshowing a. plate at a predetermined station;

FIGURE 5 is a view in perspective of the back View of ti e plate at apredetermined station;

FIGURES 6(a) and (b) show, respective.y, a back side perspective view ofthe channeling means and the belt, and a side view in cross sectionthereof;

FIGURE 7 is a partial elevational View of another embodiment of theinvention;

FlGURE 8 is another embodiment of the invention utilizing a partialelevational view in modified form of FIGURE 1 to exemplify a belt meansfor the xerographic member; and

FIGURE 9 is a partial view in elevation of a segment of the belt meansexemplifying thereupon discrete predetermined areas of sensitizedlayers.

Referring more particularly to FIGURE 1, an overall exemplary consoleconstruction is shown. Within console is disposed a plate storagechamber 12. Storage chamber 12 is so constructed as to be light-tight tocontain unexposed xerographic members exemplified as xerographic plates15. At the opposite extremity of the console id is disposed a storagebin 17 capable of receiving and containing exposed xerographic plates 18and storing them therein. Con ecting the storage chamber 12 with thestorage bin 17 is a channeling means 2'8.

Channeling means 2b, as shown in cross sectional detail in FlGURE 2, hasprovided therein a channel, guide, or slide within which the xerographicplates 15 may be caused to move or to be transported from storagechamber 12 to storage bin 17. The xerographic plates 15 may beselectively disposed into the channel 29- through operation of asolenoid 22 ctuating its magnetically coupleable restraining plunger 23.The restraining plunger 23 and its winding or solenoid 22, also referredto as means 22, is selectively actuatable for restraining the movementof said plate into and along the channel. This last stated means 22 maybe selectively positioned in the channel 2t}, for example, at the entrythereto, as well as adjacent selected of the stations. The restrainingmeans will cause the plate l5 to stop its travel from the storagechamber 12 to the storage bin 17. Means 22 may be released so thatplunger 2-3 is withdrawn, thereby permitting plate 15 to enter into thechannel 2b.

The xerographic member, exemplified as he plate 15, carries on itssensitized side a layer of electron responsive material such as aphotoconductor layer 30. The overall plate 15 construction may utilizeplastic, glass or metal and is herein exemplified as of metalconstruction. The photoconductors which can be utilized may be chosenfrom among the following like property materials, including, but notlimited to, selenium, cadmium sulfide, silver selenide, germanium,sulphurs, anthracene and anthraquinone.

As the plate 15 moves or is moved into the channel, it first encountersa charging station At charging station 23 the photoconductor layer 5tdisposed on plate 13 is presented to the charging means. The chargingmeans produces a surplus oi electrons which are disposed upon thephotoconductor layer in its dark condition. in the darlt condition, ofcourse, the photoconductor is an insulator and latent charges are storedthereon. it should be the preferred embodiment the xerograpliic plate1.) is transported past the charging ying drawings, in

station 28 collecting the electrostatic charges emitted thereupon as theplate travels past the charging station The plate 15 may next be broughtinto position at exposing station At station 32, is preferably disposedmeans 22 to hold the plate lid for further operation upon the plate byalignment means Means is inserted through the channel and through thexerographic plate 15 aligning the plate at the exposing station 33. Atthe station 32 the sensitized side or surface of photoconductor layermay be exposed to light radiation from a projector 35 for example, orfrom a cathode ray tube 36, for example, or from both, through use of ahalf silvered mirror 37. Mirror -'7 permits the projected images to besuperimposed on the im. ges of the cathode ray tube 36 and all togetherto be recorded upon the photoconductor layer of the xerographic plate l5at the exposing station 3-2 as latent electrostatic image patterns.

When exposing is completed, the plunger 23 of the restraining means 22is withdrawn, as is also the aligning means 34, so tnat the xerographicplate 15 is then ready to be moved or to drop into the next position,namely the developing station At developing station 39 electrostaticallycharged or attractable particles 4-2 are cascaded against and upon thelatent image patterns on the photoconductor layer of the plate Theparticles 42 will, of course, adhere to charged portions on layer 3oforming a negative image pattern thereby developing the latent imageinto visual image. Here again at the developing station 39, it may bedesirable to use the restraining means 22 and the alignment means 34 toproperly align the xerographic plates 15 at that station.

Upon completion of developing, the restraining means 22 is againretracted as is the alignment means 34, and the plate 15 is free tomove, he moved or drop to the next station, namely the projectionstation At the projection station the plate 15 may again be restrainedagainst further movement along the channel Ztl by the restraining means22 and aligned by the alignment means 34, alignin the plate to thepredetermined position. Here, then, at the projection station 45, alight source may be directed against the photoconductor layer 3%?carrying the visual images. The light from source 48 projected thereuponmay be reflected therefrom with a light and shadow modulated likeness ofthe visual images through a lens for example, onto a screen 52 forviewing of the visual images thereupon. When viewing of the visualimages upon the screen 52 has been completed, the restraining means 22is again retracted as is the alignment means and the plate 15 may thenmove, he moved or dropped into position as one stored plates 18 carryingthe visual image in the storage bin 17.

As shown in FIGURE 1, the plate 15 may travel by gravity from itschamber 12 to and past the various stations, each station sequentiallyacting upon the plate 35 to aid its recordation thereupon of the light,and projecting the visual image therefrom, and depositing the plate 15in the storage bin. If greater speed of plate in channel is desired,transporting of the plate l5 through. the cycle from the storage chamber12 to the storage bin 17 may be accomplished by positive action betweenplate 15 and a motive means such as a chain, belt, gears, magnetic beltsor the like may be used. The magnetic belt arrangement may be preferablyutilized as exemplified subsequently herein. To utilize such a belt,magnetic material may be embedded in tl e back or non-sensitized side ofthe xerographic plate 15 and so disposed with relation to plate 15 andthe belt as to have magnetic coupling therebetween, thus providingpositive carriage or movement of the plate 15' under the positiveinfluence of the belt from one station to the next station.

in greater detail there is shown, the cross section of the plate 15carrying the photoconctuctor surface in: FIGURE 2. FIGURE 2 also showsin greater detail con-- struction of the alignment means 34 and therestraining means The alignment means 34- comprises a solenoid having aplunger 6?. in electromagnetic coupling therewith. Upon actuation of themeans 3 2-, solenoid will cause movement of plunger 65, carrying withlipllS frame thaving thereon aligning pins 66. Pinsod nrst move intoengagement with the plate and then into channel. This coordinated actionaligns the plate with the channel. Aligning pins have two sections, anrst pin section and a second beveled pin section in the engagedposition, the first pin section protrudes through the mating holes inthe xerograplnc plate lo ror rough alignment; and second pin section on,with its po eled edges, engages mating beveled edges within the plate$.55, thus causing more exacting alignment of the plate 15 with respectto the channel Aligmn ent means operates serially or sequentially aftertne restraint g means lvleans is operated through magnetic coupling ofits plunger 72 with its solenoid 7d and lust operates to restrain thefurther motion of the xerograpnic plate 15 along the channel Followingsuch restraining of the plate '15, the alignment means 3 is sequentiallyoperated to engage the plate effecting its proper alignment.

PiGURE shows a plan view of a section along line -lll of HG 2 showingthe plan or elevational ".ent of the xerographic plate 15 by pie as andthat restraining means througn pin 12 carrying plate FFGURE 3 also showsa preferred construction wherein plate r is carried in or motel 2C llatei5 is in sliding engagement with and (led by guides or guide surfaces ofchannel Guides 7e restrain plate 15 against sideway or lateral. motionand permit only up on down when as shown in FEJURE l, or motion in thedirection of the extension of the channel To further exemplify 2 and 3,FlGURES 4 and 5 are presented to show, in perspective, the restrainingmeans and alignment means 3 2-, both holding plate in the channelingmeans 29 at one of the stations disposed along the channeling means.Thus, the photoconduetive surface as is shown in FIGURE 4 is placed inpredetermined exacting alignment with the station disposed thereat. Thealignment of the plate Eli? is shown in the back view of 4 as FlGUEl 5and is exercised by the aligning or ali nment means with its pins 6dholding plate 15' in position with resp t to the channel.

in FiG-URE 6, the utilization of the electromagnct belt 83 together withmagnetic backing 84 (or use of a mag; netic material plate) on thexerographic p e is shown exemplified. Belt may be of a ty; e linown bythe trademark Korosea which is a magnetic neoprene that is made by B. F.Goodrich Rubber Company. Greater speed may be allowed if desired byusing the belt to move the plate in positive action, transporting theplate 155 from one station to the next, or in its complete travelbetween the storage chamber 12. and the storage bin ii! under power atpredetermined speed. h iotion of belt could be continuous if desired.Plate 15 traveling with and netically coupled to belt 83 may bedisengaged in a parallel slippage from belt 83 upon restraint a ainstfurther travel of plate 15 in channel 2%} by rest; it ng means 22. Theplate 25 so restrained by means may be fully disengaged from itsmagnetic coupling with belt upon action of disengaging means lvieans maybe solenoid operated and straddle belt 83 having a pair of magneticmembers 87'. Thus, upon actuation of 85 in one direction, members it!force plate 15 from belt pen actuation of means 85 in the otherdirection, the magnetic coupling between members 87 and backing willdraw the plate into engagement with belt Of course, many well-knownswitching mechanisms nd programing devices may be utilized to performsequena t' 1 operation of the solenoids herein exemplified to producethe desired operations.

it should be noted that in the last stated embodiment,

the breaking of magnetic coupling at right angles to the field isdifiicult. Therefore, in the exemplified embodiment the fields arepreferably broken or decoupled in a path parallel to each other so thata slippage therebetween may easily be erlected as the plate la" isrestrained from further travel in the channeling means at the desiredstations. The continuously moving belt will therefore merely haveslippage of the magnetic coupling with the plate, neither impairing theaction of the belt nor the further magnetic interaction between the belt33 and the plate 15.

In the embodiment of PlGURE 7, the visual image projected from thexerographic member, as for example plate 153, at projection station maybe imaged by a con vergent lens 9d onto a light recording means SZ. Theit recording means 9*2. may be disposed in the path of the visual imagesprojected from the Xerographic member at station 415'. Light recordingmeans utilizes preferably diazo light sensitive material that respondsto the light images, upon application of heat to the exposed film. Theimages thereupon are thus developed into a permanent record. Such filmis made by Eastman Kodak Company of Rochester, New York, and by theKalvar Corporation of lose, California, ti :3 latter 2 lling such filmunder its trademark Kalvar.

Following recordation of the projected light images upon the recordingmaterial 92, the exposed him is transported by exemplary poweredspindles 9 1-, $5 to a subsequent position intermediate heating meansd7. Heating means 97 may include a pair of heating platens intermediatewhich film 92 passes, developing the images thereupon as it so passes.Subsequent to development, the film is carried to projection means asthat illuminates and projects the developed image on material @2 ontoviewing screen ltlll.

Of course, material may also be used as a memory or storage of thevisual images. To facilitate projection of stored images, spindles SM,915 may be used to move the material forward or backward as desired toselect for projection the desired recorded information.

The light images projected on the diazo light sensitive material 92 areinstantly developed into visible images immediately upon its passagethrough heating member W. This: immediate development permits immediateprojection the light images upon screen Mill. The light intensity of thedisplay received from the xerographic member at project station 45 issui'licient to expose the material as while the light from the screen ofcathode ray tube 36 is not. FEGURE 7 shows the material $2 being exposedby light images received from plate 15, but, of course, the material Q2may be exposed from light images projected as shown in FIGURE 8.

Another embodiment of the invention is shown in FZGURE 8 wherein thexerograplric member is exemplified as a erographic belt means N2 BeltlllZ may be an endless belt or an ended belt, it being exemplifiedherein as an endless belt. The belt may be made of a plastic translucentmaterial sold under the trademark Mylar by Minnesota Mining andlttanufacturing Company of Minneapolis, Minnesota. The belt may have onits entire surface a sensitized layer such as a photoconductor surface,or the same may be coated only upon discrete predetermined areas :ltlS(see FIGURE 9) of belt ltd-2.

The belt 16-2 is transported through storage chamber 12 on spools M8 andSpool 168 may have its spindie 213 .2 driven by a motor (not shown) forintermittent motion of belt 1&2. The belt may then be transported withthe visual images recorded thereon through storage bin ll? on spoolslit-9, llll. Belt 1&2, exemplified as endless, may then be wound fromspool 11d through conduit lilo past rotary brushes Trill which removethe visual images therefrom. Thereafter, endless belt Hi2; moves pastspool llll'l in cl amber to be ready for use again.

The particular embodiments of the invention illustrated 3' and describedherein are illustrative only and the invention includes such othermodifications and equivalents as may readily appear to those skilled inthe art and within the scope of the appended claims.

I claim:

1. A xcrographic processor including at least one xero graphic memberhaving a photoconductive layer disposed thereupon, said member havingalignment apertures therein, a light impervious storage chamber forcontaining said member in substantially unexposed condition, a storagereceptacle for containing said member in exposed condition, a conduitinterconnecting said chamber said receptacle for channeling said membertherein, said con duit having disposed therealong in the order named acharging station for charging said member with electr0 static charges,an exposing station for selectively altering the charges upon saidmember to record predetermined images as latent images, a developingstation for developing the latent images on said member into visualimages and a projecting station for projecting said visual images,restraining means at each station selectively actuated for restrainingthe movement of said .1 rember along said conduit, said restrainingmeans in response to actuation thereof causing insertion of a blockingelement'into said conduit to prevent further progress of said member,and alignment means at each station including alignment pins, saidalignment means being actuated subsequent to actuation of saidrestraining means for moving said alignment pins into the alignmentapertures in said member.

2. A xerographic processor including at least one xero graphic memberhaving a photoconductive layer disposed thereupon, said member havinaligmnent apertures therein, a light impervious storage chamber forcontaining said member in substantially unexposed condition, a storagereceptacle for containing said member in exposed condition, a conduitinterconnecting said charnber and said receptacle for channeling saidmember therein, said conduit having disposed therealong in the ordernamed a charging station for charging said member with electrostaticcharges, an exposing station for selectively altering the charges uponsaid member to record predetermined images as latent images, adeveloping station for developing the latent images on said member intovisual images and projecting station for projecting said visual images,initial restraining means adjacent said storage chamber normallyblocking movement of said member into said conduit, said restrainingmeans being actuated to permit said member to drop from said storagechamber into said conduit, station restraining means at each stationselectively actuated for restraining the movement of said mem her alongsaid conduit, said restraining means at each station in response toactuation thereof causing insertion of a blocking element into saidconduit to prevent further progress of said member, and alignment meansat each station including alignment pins, said alignment means beingactuated subsequent to actuation of said restraining means for movingsaid alignment pins into the alignment apertures in said member.

3. A xerographic processor including at least one xerogr-aphic memberhaving a photoconductive layer disposed thereupon, said member havingalignment apertures therein, a light impervious storage chamber forcontaining said member in substantially u exposed condition, a storagereceptacle for containing said member in exposed condition, a conduitinterconnecting said chamber and said receptacle for channeling saidmember therein, said conduit being partially bounded by channel meansfor restraining said member against lateral motion, said chan nel meanshaving alignment apertures therein, said conduit having disposedtherealong in the order named a charging station for charging saidmember with electrostatic charges, an exposing station for selectivelyaltering the charges upon said member to record predetermined images aslatent images, a developing station for developing the latent images onsaid member into visual images and a projecting station for projectingsaid visual images, restraining means at each station selectivelyactuated for restraining the movement of said member along said conduit,said restrainin means in response to actuation thereof causing insertionof a blocking element into said conduit to prevent further progress ofsaid member, and alignment means at each station including alignmentpins, said alignment means being actuated subsequent to actuation ofsaid restraining means for moving said alignment pins into the alignmentapertures in said member and said channel means.

4. A xerographic processor including at least one xerograpliic memberhaving a photoconductive layer disposed thereupon, said member havingalignment apertures herein, a light impervious storage chamber forcontaining said member in substantially unexposed condition, a storagereceptacle for containing said member in exposed condition, a conduitinterconnecting said chamber and said receptacle for channeling saidmember therein, said conduit being partially bounded by channel meansfor restraining said member against lateral motion, said channel meanshaving alignment apertures therein, said conduit having disposedtherealong in the order named a charging station for charging saidmember with electrostatic charges, an exposing station for selectivelyaltering the charges upon said member to record predetermined images aslatent images, a developing station for deve oping the latent images onsaid member into visual images and a projecting station for projecitngsaid visual images, initial restraining means adjacent said storagechamber normally blocking movement of said member into said conduit,said restraining means being actuated to permit said member to drop fromsaid storage chamber into conduit, restraining means at each stationselectively actuated for restraining the movement of said member alongsaid conduit, said restraining means at each station including asolenoid mounted to said channel means and including a plunger, saidplunger extending into said conduit in response to actuation of therestraining means at said station to prevent further progress of saidmember, and alignment means at each station including alignment pins,said alignment means being actuated subsequent to actuation of therestraining means at said station for moving said alignment pins intothe alignment apertures in said member and said channel means.

5. A xerographic processor including at least one xerographic memberhaving a photoconductive layer disposed thereupon, said member havingalignment apertures therein, a light impervious storage chamber forcontaining said member in substantially unexposed condition, a storage rceptacle for containing said member in exposed condition, a conduitinterconnecting said chamber and said receptacle for channeling saidmember therein, said conduit being partially bounded by channel meansfor restraining said member against lateral motion, said channel meanshaving alignment apertures therein terminating in beveled edges, saidconduit having disposed therealong in the order named a charging stationfor charging said member with electrostatic charges, an exposing stationfor selectively altering the charges upon said member to recordpredetermined images as latent images, a de sloping station fordeveloping the latent images on said member into visual images and aprojecting station for projecting said visual images, and alignmentmeans at each station including alignment pins movable into thealignment apertures in said member and said channel means in response toactuation of said alignment means, said alignment pins having a firstsection adapted to pass into said apertures in said channel means and asecond section including beveled edges mating with the beveled edges ofsaid member.

6. A xerographic processor including at least one xerographic memberhaving a photoconductive layer disposed thereupon, said member havingalignment apertures therein, a light impervious storage chamber forcontaining said member in substantially unexposed condition, a storagereceptacle for containing said memher in exposed condition, a conduitinterconnecting said chamber and said receptacle for channeling saidmember therein, said conduit being partially bounded by channel meansfor restraining said member against lateral motion, said channel meanshaving alignment apertures therein, said conduit having disposedtherealong in the order named a charging station for oharging saidmember with electrostatic charges, an exposing station for selectivelyaltering the charges upon said member to record predetermined images aslatent images, a developing station for developing the latent images onsaid member into visual images and a projecting station for projectingsaid visual images, initial restraining means adjacent said storagechamber normally blocking movement of said member into said conduit,said restraining means being actuated to permit said member to drop fromsaid storage chamber into said conduit, station restraining means ateach station selectively actuated for restraining the movement of saidmember into and along said conduit, said restraining means at eachstation including a solenoid mounted to said channel means and includinga plunger, said plunger extending into said conduit in response toactuation of said restraining means to prevent further progress of saidmember, and alignment means at each station including alignment pins,said alignment means being actuated subsequent to actuation of saidrestraining means for moving said alignment pins into the alignmentapertures in said member and said ohannel means.

References Cited in the file of this patent UNITED STATES PATENTS2,473,174 Pifer June 14, 1949 2,760,418 Hawn Aug. 28, 1956 2,889,758Bolton June 9, 1959 2,892,391 Mayo June 30, 1959 2,914,403 Sugarman Nov.2A, 1959 2,914,996 Whitham Dec. 1, 1959 FOREIGN PATENTS 723,534 GreatBritain Feb' 9, 1955

1. A XEROGRAPHIC PROCESSOR INCLUDING AT LEAST ONE XEROGRAPHIC MEMBERHAVING A PHOTOCONDUCTIVE LAYER DISPOSED THEREUPON, SAID MEMBER HAVINGALIGNMENT APERTURES THEREIN, A LIGHT IMPERVIOUS STORAGE CHAMBER FORCONTAINING SAID MEMBER IN SUBSTANTIALLY UNEXPOSED CONDITION, A STORAGERECEPTACLE FOR CONTAINING SAID MEMBER IN EXPOSED CONDITION, A CONDUITINTERCONNECTING SAID CHAMBER AND SAID RECEPTACLE FOR CHANNELING SAIDMEMBER THEREIN, SAID CONDUIT HAVING DISPOSED THEREALONG IN THE ORDERNAMED A CHARGING STATION FOR CHARGING SAID MEMBER WITH ELECTROSTATICCHARGES, AN EXPOSING STATION FOR SELECTIVELY ALTERING THE CHARGES UPONSAID MEMBER TO RECORD PREDETERMINED IMAGES AS LATENT IMAGES, ADEVELOPING STATION FOR DEVELOPING THE LATENT IMAGES ON SAID MEMBER INTOVISUAL IMAGES AND A PROJECTING STATION FOR PROJECTING SAID VISUALIMAGES, RESTRAINING MEANS AT EACH STATION SELECTIVELY ACTUATED FORRESTRAINING THE MOVEMENT OF SAID MEMBER ALONG SAID CONDUIT, SAIDRESTRAINING MEANS IN RESPONSE TO ACTUATION THEREOF CAUSING INSERTION OFA BLOCKING ELEMENT INTO SAID CONDUIT TO PREVENT FURTHER PROGRESS OF SAIDMEMBER, AND ALIGNMENT MEANS AT EACH STATION INCLUDING ALIGNMENT PINS,SAID ALIGNMENT MEANS BEING ACTUATED SUBSEQUENT TO ACTUATION OF SAIDRESTRAINING MEANS FOR MOVING SAID ALIGNMENT PINS INTO THE ALIGNMENTAPERTURES IN SAID MEMBER.